Every summer in the seas off Alaska humpback whales, sea lions and killer whales depend on an explosion of plant life, the plankton bloom. It transforms these seas into the richest on Earth. But will these animals survive to enjoy the great feast? The summer sun sparks the growth of phytoplankton, microscopic floating plants which can bloom in such vast numbers that they eclipse even the Amazon rainforest in sheer abundance of plant life. Remarkably, it is these minute plants that are the basis of all life here. But both whales and sea lions have obstacles to overcome before they can enjoy the feast. Humpback whales migrate 3,000 miles from Hawaii, and during their 3 month voyage lose a third of their body weight. In a heart-rending scene a mother sea lion loses her pup in a violent summer storm, while another dramatic sequence shows a group of killer whales working together to kill a huge male sea lion.
In late summer the plankton bloom is at its height. Vast shoals of herring gather to feed on it, diving birds round the fish up into a bait ball and then a humpback whale roars in to scoop up the entire ball of herring in one huge mouthful. When a dozen whales work together they employ the ultimate method of co-operative fishing - bubble net feeding. One whale blows a ring of bubbles to engulf the fish and then they charge in as one. Filmed from the surface, underwater and, for the first time, from the air, we reveal how these giant hunters can catch a tonne of fish every day.

Without words, Ron Fricke shows us the world, with an emphasis not on 'where,' but on 'what's there.' It begins with morning, natural landscapes and people at prayer: volcanoes, water falls, veldts, and forests; several hundred Balinese Hindu men perform kecak, the monkey chant. Indigenous peoples apply body paint; whole villages dance. The film moves to destruction of nature via logging, blasting, and strip mining. Images of poverty, rapid urban life, and factories give way to war, concentration camps, and mass graves. Ancient ruins come into view, and then a sacred river where pilgrims bathe and funeral pyres burn. Prayer and nature return. A monk rings a huge bell; stars wheel across the sky. (Click CC for places description)